Third, develop a property management model and plan to keep expenses low and revenue high. 

as a single property owner, do not want to pay full price as there may not much of need of reports, looking for state specific lease and ACH/Zelle/paypal kind of payment options for application fee and Rent collection. any recommendation on which plan would be best?

Do you have a plan for the proceeds?  

But does this mean that there is no need to plan?

I'm a landlord and home owner but my girlfriend and I are planning to move to LA in July and rent a place. 

Are you guys planning to stay in the Miami area long term?

There are some reputable hard money lenders and a lot of disreputable ones, but you are going to need to layout your plan and resources.

I have a small health care benefit from my local government career, and I have VA health care since I'm ex-military but it's not as good as it used to be (too many people in the system, too few providers at the VA) so I am planning on buying a supplement on the marketplace when open enrollment comes in November.

I am not (yet) into commercial RE as I am just starting out BRRRR on my first property which God willing I plan to convert it to a duplex from the single-family that it is now. 

As I plan to house hack whatever I purchase, my expenses should be covered by the tenants.